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Embalses España hoy MCP server

Which MCP servers are Embalses España hoy's own, from the official registry and from asking its own domain, whether they answer, and what they offer. A program checked each of these, nobody copied them from a product page.

read 2026-10-20

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Whose server it is
  • Registry namees.embals/embalsesverified in the MCP registry

The registry name sits under embals.es. The registry only lets a publisher use that namespace after proving control of the domain through DNS or HTTP.

When we asked itchecked 2026-10-20
  • Stateanswerschecked 2026-10-20
  • Tools6
  • Server calls itselfembals-es
  • Server version1.0.0
  • Protocol version2025-06-18

On 2026-10-20 the server answered initialize and tools/list without a sign-in. First answer in 207 ms.

Should an agent connect itConnect it, with care
  • Its tools do check the current fill level of a reservoir; compare water levels across Spain's autonomous communities, but not follow a saved list of reservoirs on a map.

Once connected

  • For "check the current fill level of a reservoir", the likely first call is estado_embalse.
  • For "compare water levels across Spain's autonomous communities", the likely first call is resumen_agua_embalsada.
  • Parameters are untyped or undescribed in 2 of 6 tools: check arguments before calling.

Said by rules from the measurements above. The likely first call is a model's pick from the tool list; read its description before relying on it.

Measured dailydaily checks: 16, the first on 2026-10-20
  • INITE MCP score89 of 100answers 100 · does the job 67 · definitions 94 · context 100 · connects 100
  • What an agent can do with it2 of 3 use cases
  • Answered100% of days16 of 16 daily checks
  • Median first answer134 ms
  • Space in an agent's context≈ 1,098 tokensthe definitions of all its tools (6), which an agent carries on every turn
  • Tool definitionsA · 94 of 100
  • Typed results0 of 6 toolsdeclared outputSchema: results come typed, read once
  • Parameters without a description: in 2 of 6

What an agent can do with it

  • can do · check the current fill level of a reservoir
  • can do · compare water levels across Spain's autonomous communities
  • cannot · follow a saved list of reservoirs on a map

Each of the product's use cases, put to Jev against this server's tool list: can an agent do it with these tools?

Worth a look

None of the five warning signs in these definitions.

A program checks the server once a day: initialize and tools/list, no model. Tokens are the definitions' length at about four characters a token. The grade averages six checks of every tool's name, description, schema and annotations; it says how well the tools are described, not whether they work. The score weighs what was measured and nothing else: answering (25%), doing the product's job (25%), definitions (20%), context (10%), use (10%) and how readily a client connects (10%). A part that was not measured is left out, and a hidden instruction caps the score at 40. The state of vendors' MCP servers: method and numbers →

Tools it offers6 tools · read 2026-10-20
  • estado_embalse

    Nivel actual de un embalse (pantano) de España: porcentaje de llenado, agua embalsada y capacidad en hm³, variación semanal y fecha del dato, con enlace a su ficha en embals.es. Acepta el nombre con o sin 'embalse de', 'pantano de' o…

  • buscar_embalses

    Lista embalses de España filtrando por nombre, provincia, comunidad autónoma o cuenca hidrográfica, ordenados por capacidad, por los más llenos o por los más vacíos. Útil para '¿qué embalses hay en Huesca?', 'los pantanos más vacíos de…

  • resumen_agua_embalsada

    Total de agua embalsada y porcentaje de llenado de la reserva hídrica de España o de una comunidad autónoma, provincia o cuenca hidrográfica, con la variación semanal, los embalses más llenos y más vacíos y, para España, la comparación…

  • historico_embalse

    Evolución semanal de un embalse con la serie oficial del MITECO (desde 1988): últimas semanas, el nivel en la misma semana de cada año anterior, y el máximo y el mínimo del periodo. Sirve para '¿está más lleno que el año pasado?' o…

  • caudal_rio

    Caudal medio semanal (m³/s) de los ríos de España en las ~120 estaciones de aforo del boletín hidrológico del MITECO, frente a lo normal para la época (mediana de la misma semana en los años anteriores, desde 2001), con la misma semana de…

  • sequia_agricola

    Qué parte de España, de una comunidad autónoma o de una provincia está en sequía según el Indicador Combinado de Sequía (CDI) del Observatorio Europeo de la Sequía (Copernicus): % del territorio en vigilancia (falta lluvia), aviso…

How to connect

Add the server to your MCP client config. Claude Desktop, Cursor and most other clients read this shape:

{
  "mcpServers": {
    "embalses": {
      "type": "http",
      "url": "https://embals.es/mcp"
    }
  }
}

Add it

Claude Code, in a terminal

claude mcp add --transport http embals https://embals.es/mcp

Add to CursorAdd to VS Code

claude.ai, ChatGPT and other clients: add https://embals.es/mcp as a custom connector in the settings.

Each line is something a program found when it went looking: the registry entry, the server's own answer, a spec that parses. A missing line means we did not find it, not that it does not exist.